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    • 1. 发明申请
    • ESTIMATING LOCATIONS OF MOBILE DEVICES IN A WIRELESS TRACKING SYSTEM
    • 无线跟踪系统中移动设备的位置估计
    • WO2017156574A1
    • 2017-09-21
    • PCT/AU2017/050220
    • 2017-03-10
    • COMMONWEALTH SCIENTIFIC AND INDUSTRIAL RESEARCH ORGANISATION
    • HEDLEY, MarkLI, Shenghong
    • G01S5/00H04W64/00
    • A wireless tracking system comprises mobile devices and stationary devices at known locations. The system receives a first radio measurement indicative of a first propagation path length and receives sensor data indicative of the movement of the first mobile device. The sensor data is of a type different to the radio measurement. The system then determines a historical location of the first mobile device based on the first radio measurement and the sensor data and determines error data indicative of a difference between a historical radio measurement and the historical location and stores the error data associated with the historical location. The system can then receive a second radio measurement indicative of a second propagation path length of radio frequency radiation and determine an estimated location of the second mobile device based on the second radio measurement and the stored error data.
    • 无线跟踪系统包括位于已知位置的移动设备和固定设备。 该系统接收指示第一传播路径长度的第一无线电测量并且接收指示第一移动设备的移动的传感器数据。 传感器数据的类型与无线电测量不同。 系统然后基于第一无线电测量值和传感器数据确定第一移动设备的历史位置,并确定指示历史无线电测量值与历史位置之间的差异的错误数据,并存储与历史位置相关联的错误数据。 然后系统可以接收指示射频辐射的第二传播路径长度的第二无线电测量结果,并基于第二无线电测量结果和所存储的错误数据来确定第二移动设备的估计位置。
    • 2. 发明申请
    • A METHOD OF SETTING-UP A RANGE-BASED TRACKING SYSTEM UTILISING A TRACKING COORDINATE SYSTEM
    • 一种利用跟踪协调系统设置基于范围的跟踪系统的方法
    • WO2016023069A1
    • 2016-02-18
    • PCT/AU2015/000484
    • 2015-08-12
    • COMMONWEALTH SCIENTIFIC AND INDUSTRIAL RESEARCH ORGANISATION
    • HEDLEY, MarkPOPESCU, Dan
    • G01S5/00H04B7/26
    • G01B21/045G01S5/0226G01S5/0289G01S5/0294G01S2205/007
    • Described herein is a method of setting-up a range-based tracking system utilising a tracking coordinate system that uses a plurality of spaced apart stationary nodes for tracking objects within a tracking environment. The method includes the step of transmitting signals between the stationary nodes to obtain range information between at least a subset of pairs of the nodes and determining coordinates for all of the stationary nodes in a node coordinate system using these range information. The method also includes the step of obtaining spatial information related to at least one of the nodes, the spatial information being indicative of one or more features or locations within the tracking environment and determining the location of all stationary nodes in the tracking coordinate system, wherein some or all of the coordinates of the stationary nodes are used for tracking objects in the tracking system.
    • 这里描述了一种使用跟踪坐标系建立基于范围的跟踪系统的方法,所述跟踪坐标系使用多个间隔开的固定节点来跟踪跟踪环境内的对象。 该方法包括在固定节点之间发送信号的步骤,以使用这些范围信息在节点坐标系统中的至少一对节点之间获得范围信息,并确定节点坐标系统中所有固定节点的坐标。 该方法还包括获得与至少一个节点有关的空间信息的步骤,空间信息指示跟踪环境内的一个或多个特征或位置,并确定跟踪坐标系中所有固定节点的位置,其中 固定节点的一些或所有坐标用于跟踪跟踪系统中的对象。
    • 4. 发明申请
    • MEASUREMENT OF TIME OF ARRIVAL
    • 到达时间的测量
    • WO2009143559A1
    • 2009-12-03
    • PCT/AU2009/000647
    • 2009-05-25
    • COMMONWEALTH SCIENTIFIC AND INDUSTRIAL RESEARCH ORGANISATIONHEDLEY, MarkHUMPHREY, David
    • HEDLEY, MarkHUMPHREY, David
    • G01S1/24H04W40/00G01S3/02H04W64/00
    • H04W64/00G01S5/0205G01S5/0221
    • Disclosed is a method of measuring time of arrival of a signal transmitted from a transmitter (120) to a receiver (110- n ). The method comprises: modulating a plurality of narrowband signal portions onto different carrier frequencies; transmitting, by the transmitter, each modulated signal portion to the receiver; receiving, by the receiver, the transmitted signal portions; estimating the channel impulse response by combining (610) the received signal portions; and measuring (620) the time of arrival using the estimated channel impulse response. Further disclosed is a method of measuring a time of arrival of a signal transmitted from a transmitter to a receiver. The method comprises: estimating a noise level (1310) in an impulse response of a channel between the transmitter and the receiver; finding a first peak (1330) in the channel impulse response that is not noise or a side lobe of a subsequent peak, using the estimated noise level; and measuring the time of arrival (1220) using the first peak.
    • 公开了一种测量从发射机(120)发送到接收机(110-n)的信号的到达时间的方法。 该方法包括:将多个窄带信号部分调制到不同载波频率上; 由发射机将每个调制信号部分发射到接收机; 由接收机接收所发送的信号部分; 通过组合(610)所接收的信号部分来估计信道脉冲响应; 以及使用估计的信道脉冲响应来测量(620)到达时间。 进一步公开的是测量从发射机发射到接收机的信号的到达时间的方法。 该方法包括:在发射机和接收机之间的信道的脉冲响应中估计噪声电平(1310); 使用所估计的噪声电平来找出不是噪声的信道脉冲响应的第一峰值(1330)或后续峰值的旁瓣; 并使用第一个峰值来测量到达时间(1220)。
    • 7. 发明申请
    • WIRELESS LOCALISATION SYSTEM
    • 无线本地化系统
    • WO2013010204A1
    • 2013-01-24
    • PCT/AU2011/000920
    • 2011-07-20
    • COMMONWEALTH SCIENTIFIC AND INDUSTRIAL RESEARCH ORGANISATIONHEDLEY, MarkGUO, Yingjie JayHUANG, Xiaojing
    • HEDLEY, MarkGUO, Yingjie JayHUANG, Xiaojing
    • G01S5/14
    • H04W64/00G01S5/14G01S13/76G01S13/878
    • Disclosed is an apparatus for estimating the location of a remote node. The apparatus comprises an antenna array comprising a plurality of elements in a fixed spatial arrangement, at least one element being a transmitting element configured to transmit a first wireless signal to the remote node, and at least two elements being receiving elements configured to receive a second wireless signal transmitted by the remote node in response to the first wireless signal. The apparatus further comprises a signal processing unit connected to the antenna array, the signal processing unit being configured to: estimate a plurality of round trip distances using the wireless signals, each round trip distance being from a transmitting element to the remote node and back to a receiving element; and estimate the location of the remote node using the round trip distance estimates.
    • 公开了一种用于估计远程节点的位置的装置。 所述装置包括天线阵列,所述天线阵列包括固定空间布置的多个元件,至少一个元件是被配置为向所述远程节点发送第一无线信号的发射元件,以及至少两个元件,被配置为接收第二个 远程节点响应于第一无线信号而发送的无线信号。 该装置还包括连接到天线阵列的信号处理单元,信号处理单元被配置为:使用无线信号估计多个往返行程距离,每个往返行程距离是从发射元件到远程节点,并且返回到 接收元件; 并使用往返距离估计来估计远程节点的位置。
    • 9. 发明申请
    • WIRELESS POSITIONING
    • 无线定位
    • WO2013166546A1
    • 2013-11-14
    • PCT/AU2013/000468
    • 2013-05-07
    • COMMONWEALTH SCIENTIFIC AND INDUSTRIAL RESEARCH ORGANISATION
    • HEDLEY, Mark
    • G01S5/06G01S5/02G01S1/24
    • G01S5/06G01S5/0215G01S5/0221G01S5/0278
    • This disclosure concerns estimating the location of a transmitter using multiple pairs of locator nodes with known locations and measuring time of arrival of a signal received from a transmitter. A processor of a location estimation node first determines time difference of arrival values from time of arrival values measured by each pair of locator nodes. The processor then determines likelihood information for multiple candidate locations of the transmitter and estimates the location of the transmitter from the likelihood information. A processor further determines an initial time of arrival value for the received signal and channel impulse response for a radio channel between the transmitter and receiver. The processor then determines a time correction from the channel impulse response based on a first peak of the channel impulse response and a leading edge of the first value. The processor finally determines an improved time of arrival value of the received signal.
    • 本公开涉及使用具有已知位置的多对定位器节点估计发射​​机的位置并且测量从发射机接收的信号的到达时间。 位置估计节点的处理器首先确定由每对定位器节点测量的到达时间值的时间差值。 然后,处理器确定发射机的多个候选位置的似然信息,并根据似然信息估计发射机的位置。 处理器还确定接收信号的初始到达时间值和发射机与接收机之间的无线电信道的信道脉冲响应。 然后处理器基于信道脉冲响应的第一峰值和第一值的前沿确定来自信道脉冲响应的时间校正。 处理器最终确定接收信号的改进的到达时间值。